Electric gaslighter



Feb. 14, 1939. N. E. NILSSQN 2,146,977

ELECTRIC GASLIGHTER Filed Aug. 1'7, 1937 5 wwww Patented Feb. 14, 1939 M Q ELECTRIC GA'SLIGHTER Nils Emil Nilsson, Stockholm,"swedenyassignor to TelefonaktiebolagetL. Ericsson,Stockholm, Sweden, a company-of Sweden Application August 17, 1937,Serial No. 159,568

InSweden'August 20, 1936 5 Claims. (Cl. 175-115) The presentinvention relates to electric gasiary contact devices l2 and I3 are controlled lighters and relates "more particularly to such each by an appertaining'cam i9, 20 and'2l reelectric' gas-lighters for gas stoves or the like in spectively, said cams being provided on a com- Which the'gas is lighted upon actuation of a'conmonshaft 22 which is driven through a suitable 5 'ta'ct device, preferably by means of an electric gearing23 from the counting mechanism of the spark generated in a "spark-gap provided adjagas meter 24.

cent the burner. The gas-lighter mechanism justde'scribed op- Elect'ric gas-lighters are known in which the erates in the following manner. Whenever gas spark is produced by an induction coil which is fiowing'out through one'or more of the burners is is connected to a primary current source'for "a the counting mechanism of the gas meter'24' will brief moment upon the opening of the gas cock. be moving, then driving through the gearing23 This device has the inconvenience, however, that the shaft 22 at a speed which is proportional to in the event of the flame becoming extinguished the amount of gas supplied to the burners per while the gas cock is still open the gas will not be unit of time. The cam l9 then brings the con- 15 re-ignited but will stream out into the room tact device Hi to connect the condenser l alterforming an explosive and poisonous gas mixture nately to the rectifier bridge I8, the condenser with the air in the room. This inconvenience being then charged comparatively slowly through found in previously known gas-lighters is avoided the ohmic resistances I1, and to the primary according to the present invention by providing winding of the transformer M, the condenser for a periodical actuation of the contact device just charged being then rapidly discharged and a resultant repetition of! the electric ignitthrough the latter. The discharge causes a high ing impulse/spark or the like/so long as gas electromotive force to be induced in the secondcontinues to flow through the gas pipe to the ary winding of the transformer. The cams 2!] burner, the flowing gas itself being made to actuand 2| are so shaped that one of the spark gaps :3 ate the contact device, for instance through the l0 and II will be connected to the secondary intermedium of the counting mechanism of the Winding each time a discharge of. the condenser ordinary gas meter. In case the gas-lighter is takes place, so that the voltage induced in the to be used for a plurality of burners provisions secondary winding will cause a spark alternately may be made according to the invention to have in the two spark gaps. Since the spark dis- ;1) the various spark gaps, ignition filaments or the charges are periodically repeated in this manner like, which are allotted to the respective burners, at all the burners, this will insure that a flame connected into the ignition circuit consecutively that happens to have become extinguished will and in unison with the periodically actuated be ignited anew before any considerable amount contact device, thus avoiding the division of the of gas has had time to flow out into the room.

electric energy available on several spark gaps Since in the shown embodiment there is never or the like simultaneously. direct electric connection between the source of The invention will now be described more in energy and the spark gaps the transmission of detail, reference being had to the drawing formenergy will cease completely when the gas meter ing part of this specification and illustrating diastops irrespective of the position then occupied n grammatically a preferred embodiment. by the cam IS.

The drawing illustrates an electric gas-lighter The shaft 22 must, of course, not necessarily for two burners each provided with a spark gap be actuated by the gas met aIt O h this s H) or II respectively which with the aid of an for the present considered to be the preferred appertaining auxiliary contact device I2 or l3 r e but it is also Possible 0 drive the 5 respectively can be connected to the secondary shaft from a suitable sepa a gas turbine W ic side of. a transformer l4. Through the primary is included in the gas pipe leading to the gas winding of the transformer is periodically disburners. Furthermore, it is not essential for the charged a condenser l5 which through the aid invention Whether the transmission of energy of a periodically operating contact device I6 is from the source of current to the ignition device 50 connected alternately to the direct current teris eifected with the aid of a condenser as shown minals of a rectifier bridge I8 and to the primary on the drawing or in some other manner, for winding of the transformer, the rectifier bridge example by means of an induction coil. Furtherbeing permanently connected to an alternating more, the contact device included in the conneccurrent source in series with two ohmic resisttion can be of any desired kind. Generally all 55 ances ll. The contact device l6 and the auxilsuch modifications of the described embodiment 55 can be efiected as fall within the scope of. the appended claims.

I claim:-

1. An electric gas-lighter for gas-heated kitchen stoves or the like having one or more burners, comprising in combination ,a source of electric energy, an ignition circuit, a first contact device for periodically connecting said source of electric energy to said ignition circuit, a plurality of ignition members, one ignition member being provided at each burner, a second contact 'device operating in unison with said first contact device for consecutively connecting each one of said ignition members to said ignition circuit when energized, and means for operating said first and said second contact devices, said 7 means being driven by the gas current flowing to the burners.

2. An electric gas-lighter for gas-heated kitchen stoves or the like having one or more burners, comprising in combination a number of ignition members, at least one ignition member being provided adjacent each burner, a source of electric energy, a condenser, a contact device for periodically connecting said condenser alternately to said source of electric energy and to said ignition members, and means for operating said contact device, said means being driven by the gas current flowing to the burners.

3. An electric gas-lighter according to claim 2, characterized by the provision of a transformer in the circuit connecting the condenser to the ignition members.

4. An electric gas-lighter for gas-heated kitchen stoves or the like having one or more burners, comprising in combination a number of ignition members, at least one ignition member being provided adjacent each burner, a source of electric energy, a contact device for periodically transmitting electric energy from said source to said ignition members, a gas meter included in the pipe through which gas is supplied to said burners, and coupling means for connecting a moving part of said gas meter to said contact device.

5. An' electric gas-lighter for gas-heated kitchen stoves or the like having a plurality of burners, comprising in combination a source of electric energy, a condenser, an ignition circuit, a first contact device for periodically connecting said condenser alternately to said source of electric energy and to said ignition circuit, a plurality of spark gaps, one spark gap being provided adjacent each burner, .a second contact device adapted to operate in unison with said first contact device for consecutively connecting each one of said spark gaps to said ignition circuit when energized, a cam shaft for operating said first and said second contact device, a gas meter provided in the pipe delivering gas to said burners, and coupling means for connecting the counting mechanism of said gas meter to said cam shaft.

NILS EMIL NILSSON. 

